More urination in the afternoon is usually a symptom of urinary frequency, which may be caused by physiologic factors, polyuria frequency, inflammatory frequency, neurogenic frequency, reduced bladder capacity frequency, and periurethral lesions. 1. Physiological factors: For example, more drinks or water in the afternoon, mental stress, and cold environment can lead to increased urination, which is mostly normal. After reducing the intake of liquid, improving the environment and adjusting the mood, the situation of frequent urination can usually be improved. 2. Pathologic factors: (1) polyuria urinary frequency: the number of times of urination increased, and each time the volume of urine is not less, and the total volume of urine increased. See diabetes mellitus, uremia, etc. (2) Inflammatory urinary frequency: frequent urination and less volume of urine each time, mostly accompanied by urinary urgency, urinary pain, such as cystitis, urethritis, prostatitis, etc.. (3) Neurogenic urinary frequency: frequent urination and small amount of urine each time, mostly seen in central and peripheral neuropathy, such as hysteria, neurogenic bladder. (4) Reduced bladder capacity urinary frequency: such as bladder occupation, bladder tuberculosis, etc., manifested as persistent urinary frequency. (5) Periurethral lesions: urethral polyps, paraurethral cysts, etc. irritate the urethral opening causing frequent urination. If there is a situation of frequent urination in the afternoon, it is recommended to be actively diagnosed and treated in regular hospitals.